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https://git.code.sf.net/p/quake/quakeforge
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6e04fd5ff6
The attached patch (against quakeforge git) changes the [con]width, [con]height, and most importantly the rowbytes members of viddef_t from unsigned to signed int, like in q2. This allows for a properly negative vid.rowbytes which may be needed in, e.g. a DIB sections windows driver if needed. Along with it, I changed a few places where unsigned int is used along with comparisons against the relevant vid.* members. One thing I am not 100% sure is the signedness requirements of d_zrowbytes and d_zwidth: q2 has them as unsigned but I am not sure whether that is because they are needed as unsigned or it was just an oversight of the id developers. They do look like they should be OK as signed int to me, though: comments? == Note from Bill Currie: I had to do some extra changes as many signed/unsigned comparisons were somehow missed.
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/*
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d_vars.c
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global refresh variables
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "QF/qtypes.h"
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#ifdef PIC
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# undef USE_INTEL_ASM //XXX asm pic hack
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#endif
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#ifndef USE_INTEL_ASM
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// all global and static refresh variables are collected in a contiguous block
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// to avoid cache conflicts.
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// global refresh variables -----------------------------
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// FIXME: make into one big structure, like cl or sv
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// FIXME: do separately for refresh engine and driver
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float d_sdivzstepu, d_tdivzstepu, d_zistepu;
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float d_sdivzstepv, d_tdivzstepv, d_zistepv;
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float d_sdivzorigin, d_tdivzorigin, d_ziorigin;
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fixed16_t sadjust, tadjust, bbextents, bbextentt;
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byte *cacheblock;
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int cachewidth;
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byte *d_viewbuffer;
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short *d_pzbuffer;
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int d_zrowbytes;
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int d_zwidth;
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#endif // !USE_INTEL_ASM
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